// Copyright (c) 2009 Mike Haight, Andy Kipp
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.

#include "stdafx.h"

Input::Input(void)
{
    IDirectInput8W* directInputObject = NULL;

    Marshal::ThrowExceptionForHR(
        ::DirectInput8Create(
            ::GetModuleHandleW(NULL),
            DIRECTINPUT_VERSION,
            IID_IDirectInput8W,
            reinterpret_cast<void**>(&directInputObject),
            NULL));

    IDirectInputDevice8* directInputDevice = NULL;

    Marshal::ThrowExceptionForHR(
        directInputObject->CreateDevice(
            GUID_SysKeyboard,
            &directInputDevice,
            NULL));

    Marshal::ThrowExceptionForHR(
        directInputDevice->SetDataFormat(&c_dfDIKeyboard));

    mNativeInput = new NativeInput(directInputDevice);

    mDirectInputObject = directInputObject;
    mDirectInputDevice = directInputDevice;
}


Input::~Input(void)
{
    Unacquire();

    SAFE_DELETE(mNativeInput);
    SAFE_RELEASE(mDirectInputDevice);
    SAFE_RELEASE(mDirectInputObject);
}


void Input::Acquire(Window^ argWindow)
{
    if (!mAcquired)
    {
        Marshal::ThrowExceptionForHR(
            mDirectInputDevice->SetCooperativeLevel(
                (HWND)argWindow->Handle.ToPointer(),
                DISCL_FOREGROUND | DISCL_NONEXCLUSIVE | DISCL_NOWINKEY));

        mDirectInputDevice->Acquire();
        mAcquired = true;
    }
}


void Input::Unacquire(void)
{
    if (mAcquired)
    {
        mDirectInputDevice->Unacquire();
        mAcquired = false;
    }
}


void Input::UpdateKeyStates(void)
{
    mNativeInput->Update();
}


Boolean Input::KeyDownState::get(int argKey)
{
    return (mNativeInput->CurrentKeyStates[argKey] > mNativeInput->PreviousKeyStates[argKey]);
}


Boolean Input::KeyUpState::get(int argKey)
{
    return (mNativeInput->CurrentKeyStates[argKey] < mNativeInput->PreviousKeyStates[argKey]);
}


Boolean Input::KeyPressedState::get(int argKey)
{
    return (mNativeInput->CurrentKeyStates[argKey] != 0);
}